Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e069835189ad16…

MALICIOUS

PDF

41.7 KB Created: 2021-05-18 04:14:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fbed2462795474420b0fe4647e951810 SHA-1: 9769f5ef1fdce194ee5ab4a4b380245fabec8d55 SHA-256: b1e069835189ad16cdfb567dbc8a564e76fdeb75befb90b00b27c0281c158060
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/how-do-you-get-free-roblox-game-hack PDF link annotation
    • http://shoruq.sch.ae/userfiles/files/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/roblox-person_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://shoruq.sch.ae/userfiles/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004721.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4721 25340 bytes
SHA-256: a9f10bcbcc9c86cb4c5f32f3df149ac870404e8d154981f86382ef5f393d702c
font_01_sfnt_off00007f31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F31 18688 bytes
SHA-256: 094a4600e44b5c04215cd8ac870b75cf15a4da61eb1de076039b07fe4aec062b

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